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ACPI: Final APM_CNT_GNVS_UPDATE cleanup 

All platforms moved to initialise GNVS at the time
of SMM module loading.

Change-Id: I31b5652a946b0d9bd1909ff8bde53b43e06e2cd9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48699
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Kyösti Mälkki 2020-06-17 01:00:10 +03:00 committed by Patrick Georgi
parent 8c2cc68b1a
commit b8cf0394fb
3 changed files with 1 additions and 41 deletions
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4
src/arch/x86/acpi_s3.c
View File

@ -5,7 +5,6 @@
#include <acpi/acpi.h>
#include <arch/cpu.h>
#include <commonlib/helpers.h>
#include <cpu/x86/smm.h>
#include <fallback.h>
#include <timestamp.h>
@ -18,9 +17,6 @@ extern unsigned int __wakeup_size;
void __noreturn acpi_resume(void *wake_vec)
{
/* Restore GNVS pointer in SMM if found. */
apm_control(APM_CNT_GNVS_UPDATE);
/* Call mainboard resume handler first, if defined. */
mainboard_suspend_resume();

35
src/cpu/x86/smm/smi_trigger.c
View File

@ -1,12 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpi_gnvs.h>
#include <arch/io.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
static void set_smm_gnvs_ptr(void);
int apm_control(u8 cmd)
{
if (!CONFIG(HAVE_SMI_HANDLER))
@ -23,9 +20,6 @@ int apm_control(u8 cmd)
case APM_CNT_ACPI_ENABLE:
printk(BIOS_DEBUG, "Enabling ACPI via APMC.\n");
break;
case APM_CNT_GNVS_UPDATE:
set_smm_gnvs_ptr();
return 0;
case APM_CNT_FINALIZE:
printk(BIOS_DEBUG, "Finalizing SMM.\n");
break;
@ -45,32 +39,3 @@ int apm_control(u8 cmd)
printk(BIOS_DEBUG, "APMC done.\n");
return 0;
}
static void set_smm_gnvs_ptr(void)
{
uintptr_t gnvs_address;
if (CONFIG(ACPI_NO_SMI_GNVS)) {
printk(BIOS_WARNING, "%s() is not implemented\n", __func__);
return;
}
gnvs_address = (uintptr_t)acpi_get_gnvs();
if (!gnvs_address)
return;
/*
* Issue SMI to set the gnvs pointer in SMM.
*
* EAX = APM_CNT_GNVS_UPDATE
* EBX = gnvs pointer
* EDX = APM_CNT
*/
asm volatile (
"outb %%al, %%dx\n\t"
: /* ignore result */
: "a" (APM_CNT_GNVS_UPDATE),
"b" (gnvs_address),
"d" (APM_CNT)
);
}

3
src/include/cpu/x86/smm.h
View File

@ -22,11 +22,10 @@
#define APM_CNT_PST_CONTROL 0x80
#define APM_CNT_ACPI_DISABLE 0x1e
#define APM_CNT_ACPI_ENABLE 0xe1
#define APM_CNT_MBI_UPDATE 0xeb
#define APM_CNT_GNVS_UPDATE 0xea
#define APM_CNT_ROUTE_ALL_XHCI 0xca
#define APM_CNT_FINALIZE 0xcb
#define APM_CNT_LEGACY 0xcc
#define APM_CNT_MBI_UPDATE 0xeb
#define APM_CNT_SMMINFO 0xec
#define APM_CNT_SMMSTORE 0xed
#define APM_CNT_ELOG_GSMI 0xef